Portal Fall (Elite)
Hazard
Level 20 Elite Lurker
XP 5600

An eldritch giant activates a dormant portal hanging in midair, and a deadly avalanche of wood spills from a matching portal in the Feywild and drops toward you.

Hazard: Logs and deadfall tumble down to a target square and make a burst 3 attack.Perception     Characters can’t use Perception to detect this hazard.Initiative +21TriggerEach eldritch giant can, as a minor action once per turn, trigger the trap’s attack. Special: Though the giants cannot keep the portals open for long, additional fomorians have a chance to cross over from the Feywild the longer the fight goes on. Starting in the fourth round and every round thereafter, each activation of the hazard brings 1d4 – 1 more fomorian guards into the fray. Award the PCs additional experience for any reinforcements they kill.AttackMinor Action 1/turn      Close burst 1 centered on one enemy
Targets Creatures in burstAttack: +23 vs. ReflexHit: 3d8 + 5 damageEffect The area becomes difficult terrain.Countermeasures     Arcana DC 27: A character who makes a check as a standard action briefly forces the hidden portals away from his or her area, and the hazard cannot target any creature within a close burst 2 of the character.
     Arcana DC 27: A character who makes a check as a minor action briefly forces the hidden portals away from him or her, and the hazard cannot target him or her.
     When an eldritch giant is killed, the hazard becomes less dangerous, and when both are dead, it ceases to function.

Published in Dungeon Magazine 167, page(s) 82.